Some devices throw an hidpp20::Error InvalidFeatureIndex when Root
GetFeature is called with some features (e.g. 0x1b04) as the parameter.
Since Root is a required feature in the HID++ 2.0 protocol, this error
can safely be ignored and treated as an UnsupportedFeature.
Fixes bug in #20 where the Logitech PRO headset would not work.
Many changes were made here but that was the biggest one.
There's currently a bug where std::system_error: Broken pipe is thrown
after launching the daemon with a receiver connector.
A workaround for this bug is to simply shake the mouse while starting
the daemon. I will investigate this soon.